mathews



J. M. MATHEWS.

HINGE MORTISER.

(No Model.)

No. 379,076. Patented Mar. 6. 1888.

UNITED STATES PATENT OFFICE.

JAMES M. MATHEWS, OF MIN NEAPOL-IS, MINNESOTA, ASSIGNOR OF ONE-HALF TO RUFUS P. MATHEWS, OF SAME PLACE.

HINGE-Moerman.

SPECIFICATION forming part of Letters Patent No. 379,076, dated March 6, 1888.

Application filed November 8, 1857. Serial N o. 254,500. (No model.)

To all whom it may concern/.-

Be it known that I, J AMES M. MATHEws, of Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain Improvements in Hinge-Mortisers, of which the 'following is a specification.

My invention relates to improvements in tools for cutting mortises for hinges, and the object I have in View is to provide a tool of simple construction by means of which a mortise of any desired length, width, and depth may be quickly and easily cut.

The invention consists, generally, in the con struction and combination hereinafter described, and particularly pointed out in the claims.

In the accompanying drawings, forming a part of this specification, Figure lis a side elevation showing the handle and stock of my improved tool, the knives and gages being omitted. Fig. 2 is a central vertical section of the same. Fig. 3 is a partial side elevation with the knives and gages in position. Fig. 4 is-a central vertical section of the same. Fig. 5 is a bottom plan View, and Fig. 6 is a detail crosssection showing the arrangement of the width-gage.

In the drawings, 2 represents the handle of the tool, which is preferably formed of wood and of substantially the form shown.

3 represents a cap, preferably formed of cast metal and arranged over the end of the handle 2 and forming the stock, to which the knives and gages are secured in the manner hereinafter described. The cap 3 extends over the end of the handle 2 and is provided with the shoulders 5 and the depending flange 7 at one side of the handle and with the depending iiange 9 at the opposite side. The flange 9 is also provided, preferably, with the shoulder 11. A bolt, I3, extends through the flanges 7 and 9 and through the wooden stock, thereby securing the cap 3 in position, as shown in Fig. 4. Upon the opposite sides of the stock are preferably arranged the depending fianges 15, which are also provided with shoulders 5, corresponding with the shoulders upon the other flange of the cap. As here shown, the ange 15 is a narrow strip of metal 5o which does not entirely cover the side of the Stock. The continuation of the shoulders 5 5 may therefore be formed in the exposed portion of the wood, as shown in Fig.l. A rectangular knife, 17, is placed upon the shoulder 5, and is secured in position by means of screws 19, extending through the flange 15,0r by other suitable means.

It will be seen that the shoulder 5 forms a solid metallic backing for the knife 17, and by providing the cap with two shoulders 5 5, as co shown, knives of different sizes may be used. The position of the screw-holes through the liange 15, as shown in Fig. l, permits the securing of either knife to the stock by screw 19, passed into the same screw-hole. The face of the cap 3 -between the parallel parts of the knife I9 is provided with a dovetailed way or groove, 2l,v in which is arranged the sliding gage-plate 23. This plate projects slightly beyond the edges of the knife 17 and is adapted 70 to be moved back and forth in the dovetailed groove and to be securedat any point therein by means of the screw 25. This gage-plate is -for the purpose of limiting the width of the cut that will be made by the knife 17. The cap 3 has also secured to it, at the opposite side from the knife 17, the knife 27, which is used for removing the chip from the mortise after the cuts for the outline of the mortise have been made by means of the knife 17. The 8c width of the knife 27 is equal to the distance .between the edges of the parallel blades of the knife 17, and I prefer to secure it against the iiange 9 of the cap 3 by means of the bolt 13, which passes through a slot in the knife 27. The end of the knife 27 preferably bears against the shoulder 11, which thus forms a solid backing for the knife. A gage-plate,29, is also preferably secured against the face of the knife 27 upon the bolt 13 by the nut 14, 9o which thus clamps the gage 29 and the-knife 27 against the cap 3. By loosening the nut 14 the gage may be moved, so as to be brought nearer to or farther from the edge of the knife 27.

The parallel sides of the knife 17, preferably,

do not extend the full width of the stock, and between them and the knife 27 is arranged the adjustable gage 33. This gage consists of a base-plate having arms that project at right angles therefrom and extend beyond the edge roo of the knife 27. The base-plate is provided with the slots 35, through which extend the screws 37, thereby securing the gage to the face of the cap and adapting the gage to be adjusted toward or from the knife 27.

The manner of using the tool will be readily understood. In cutting hinge-mortises the gage 23 will first be adjusted in accordance with the width of the mortise desired. rlhe knife 17 will be brought upon the surface of the wood, with the plate 23 bearing against the face that is at right angles to that in which the mortise is to be made. 3y means of a mallet or hammer theknifc 17 is driven to the desired depth into the wood. The tool is then removed and the knife 27 is brought into a position to remove the chip inclosed by theineisions made by the knife 17. rl`he gage 33, resting upon the face of the wood in which the incision was made by the knife 17, will determine the depth from that face that the knife 27 will cut, and the gage 29 will determine the depth of the incisions to be made by the knife 27. lt will be seen that the tool is exceedingly simple in its construction and that it is especially adapted for cutting mortises where hinges of any size are to be used. lf it is desired to cut a mortise of greater length than the distance between the two parallel portions of the knife 17, two or more cuts may be made until a lnortise of any desired length is provided.

I have described a stock and handle preferably formed of wood with a metal cap, but it will be understood that any suitable material maybe used for any part, and that the whole tool may be formed of metal, if preferred. W'here a wooden handle is used, a

metal ferrule, 39, will preferably be provided upon its end, as shown in Figs. l and 2.

I Claim as my invention- 1. The combination, in a hinge-mortising tool, with the handle 2 and the metal cap 3, having the dovelailed groove 2l extending transversely across its face, of the rectangular knife 17, secured upon said cap, and the sliding gage-plate 23, arranged between the parallel sides of said knife and adapted to slide in said groove, substantially as described.

2. rllhe combination, in a hinge-mortising tool, with the handle 2 and the metallic cap 3, of the rectangular knife 17, secured upon said cap, the sliding width-gage 23, arranged to slide transversely upon the face of said cap between the two parallel sides of said knife, the knife 27, secured upon the side of said cap, and the adjustable depthgage 33, all substantially as described.

3. The combination, in a hinge-mortising tool, with the handle 2, of the metal cap 3, provided at its sides with the depending iianges 7, 9, and 15, the shoulders 5 upon the flanges 7 and l5, and the shoulder 1l upon the flange the rectangular knife 17, bearing upon said shoulders 5, and the knife 27, secured upon the flange 9 and bearing against the shoulder l1, substantially as described.

Ll. The combination, in a hinge-mortising tool provided with the rectangular knife 17 and widtlrgage 23, of the knife 27, the ad 'ustable gaffe 29 secured u )on the face of said J D 2D 7 l knife, and the adjustable depth-gage 33, sccured upon the end of the stock and adjustable toward and from the knife 27, substantially as described.

In testimony whereof l have hereunto set my hand this 2d day of November, 1887.

JAMES M. MATHIJWS. 1n presence of- R. H. SANFORD, S. J. BEARDSLME. 

